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A146177 as a simple table

na(n)
11
21
31
41
51
61
713
833
961
10115
11431
121359
135125
1423279
15156491
16866819
175189807
1830665629
19248556857
201970821419
2120754531695
22214278299237

[1,1,1,1,1,1,13,33,61,115,431,1359,5125,23279,
 156491,866819,5189807,30665629,248556857,
 1970821419,20754531695,214278299237]